That's a very interesting question. I'd be interested to know what the hardcore CT'ers consider to be the most recent legitimate big terrorist attack

The more hardcore CTers generally believe that any attack against "Western" targets is typically a false flag, but will generally ignore any non-Western attacks, e.g. Mumbai, Pakistan.

911 is the main focus, then London, Madrid, and so on depending on how strong their belief is.

The modus operandi among these guys is to analyse an attack or event, find discrepancies, anomolies, coincidences and combine with selective misreporting, dodgy science, "expert" information, hearsay, embellisment, conjecture and just plain bull**** to formulate a "case" that indicates that the event was a "false flag" or an inside job.

Report: Al-Qaida planning to crash U.S. airline during London Olympics

"According to the Sunday Times, a Norwegian who was trained in Yemen plans to crash the plane on a suicide mission; British authorities say there is a shortage of personnel to carry out proper security screenings".

Report: Al-Qaida planning to crash U.S. airline during London Olympics

"According to the Sunday Times, a Norwegian who was trained in Yemen plans to crash the plane on a suicide mission; British authorities say there is a shortage of personnel to carry out proper security screenings".